Year US Dollars adjusted for inflation) 1965 1469060078.02341 1966 1545516775.03251 1967 2568943823.14695 1968 4672595318.59558 1969 5871871521.45644 1970 6687773732.11964 1971 6747844993.49805 1972 7410835890.76723 1973 6354639271.78154 1974 7085346944.08323 1975 8816545383.61509 1976 10627474642.3927 1977 10734516514.9545 1978 10338033810.143 1979 10785850715.2146 1980 11436824707.4122 1981 13386469180.7542 1982 14935261898.5696 1983 17424472821.8466 1984 20336379973.9922 1985 23184936801.0403 1986 23649136280.8843 1987 22835420546.16389 1988 24197331339.40179 1989 27042178153.446 1990 27006908192.45769 1991 28647328998.6996 1992 31057681924.5774 1993 32934485305.5917 1994 34210951625.48761 1995 35920411183.355 1996 37014525357.6073 1997 39247801300.39009 1998 40284860858.2575 1999 40234582574.7724 2000 42407802340.70219 2001 44308712613.7841 2002 43821066319.896 2003 42651495448.63459 2004 43202600780.2341 2005 44278543563.0689 2006 46657217165.1496 2007 48734720416.1248 2008 52730819245.7737 2009 55953966189.85689 2010 58642392717.81531 2011 57992197659.29781 2012 63404421326.3979 2013 66176853055.9168 2014 67997399219.7659 2015 71219765929.77888 2016 75054356306.89209 2017 74849701690.50708